Remove newline from string

Hi,
How can I detect new line from string. I tried Environment.NewLine but its not working. Initially I tried to replace it directly but it was not working after I tried to detect new line. Then I came to know that its not detecting new line.

As temporary solution I have taken a richbox with new line and comparing it. Its working fine but its not the proper method so please tell me how to do it properly.

# Have you ever tried using the String.Compare method for a case-insensitive string comparison? #
The [documentation](http://msdn.microsoft.com/en-us/library/zkcaxw5y(v=vs.100).aspx) on MSDN for the overloaded method:
'Declaration
Public …

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